A new viscoelastic method of calculation of low-temperature thermal stresses in asphalt layers of pavements
| Autor: | Józef Judycki |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Numerical analysis 0211 other engineering and technologies Relaxation (iterative method) 02 engineering and technology Thermal expansion Viscoelasticity Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Rheology Mechanics of Materials Asphalt 021105 building & construction Thermal Composite material Civil and Structural Engineering |
| Zdroj: | International Journal of Pavement Engineering. 19:24-36 |
| ISSN: | 1477-268X 1029-8436 |
| DOI: | 10.1080/10298436.2016.1149840 |
| Popis: | The paper presents a new method of calculation of thermal stresses in asphalt layers of pavements induced by cooling or heating. The method, developed by the author, is based on the analytical solution for the linear viscoelastic Burgers model extended numerically for the case of asphalt layers whose rheological parameters are strongly dependent on temperature. The coefficient of thermal expansion and Poisson’s ratio may optionally be taken either as constant or varying with temperature. Two equivalent numerical methods have been developed, named as ‘the incremental method’ and ‘the stress increase and relaxation method’. The computer program was developed for calculation of thermal stresses in several different cases of temperature impact, included constant rate cooling and heating, change of temperature and relaxation and a cycle of first cooling, relaxation and second cooling. What the most important practically, the solution for any change of temperature, modelling real winter changes in long ... |
| Databáze: | OpenAIRE |
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